What two reference sets are automatically created for all parts files with geometry?

In the context of NX CAD software, every part file that contains geometry automatically includes two reference sets: Empty and Entire Part. The Empty reference set is generated initially and contains no geometry, while the Entire Part reference set encompasses all the geometric elements of the model.

This setup allows users to manage and manipulate their models effectively. The Empty reference set can be utilized as a convenient starting point for defining custom reference sets where only selected geometry is included. Meanwhile, the Entire Part reference set serves as a comprehensive collection of all the geometry in the model, which is essential for operations that might need to consider every part element.

Understanding these reference sets is crucial for efficient part file management and for streamlining the design workflow in NX. Other options, like Default and Optional or Visible and Hidden, do not accurately represent the reference set structure in NX. The terms Active and Inactive might relate to different contexts, such as layers or features in a design, but they are not the standard reference sets created upon file creation.